u-boot/arch/x86/cpu/Makefile

#
# (C) Copyright 2006
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# (C) Copyright 2002
# Daniel Engström, Omicron Ceti AB, daniel@omicron.se.
#
# SPDX-License-Identifier:	GPL-2.0+
#

include $(TOPDIR)/config.mk

LIB	= $(obj)lib$(CPU).o

START-y	= start.o
START-$(CONFIG_X86_RESET_VECTOR) += resetvec.o start16.o
COBJS	= interrupts.o cpu.o

SRCS	:= $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))
START	:= $(addprefix $(obj),$(START-y))

all:	$(obj).depend $(START) $(LIB)

$(LIB):	$(OBJS)
	$(call cmd_link_o_target, $(OBJS))

#########################################################################

# defines $(obj).depend target
include $(SRCTREE)/rules.mk

sinclude $(obj).depend

#########################################################################
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00			`#`
Add support for a saving build objects in a separate directory. Modifications are based on the linux kernel approach and support two use cases: 1) Add O= to the make command line 'make O=/tmp/build all' 2) Set environement variable BUILD_DIR to point to the desired location 'export BUILD_DIR=/tmp/build' 'make' The second approach can also be used with a MAKEALL script 'export BUILD_DIR=/tmp/build' './MAKEALL' Command line 'O=' setting overrides BUILD_DIR environent variable. When none of the above methods is used the local build is performed and the object files are placed in the source directory. 2006-09-01 17:49:50 +00:00			`# (C) Copyright 2006`
			`# Wolfgang Denk, DENX Software Engineering, wd@denx.de.`
Coding style cleanup 2006-10-08 22:42:01 +00:00			`#`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00			`# (C) Copyright 2002`
Convert ISO-8859 files to UTF-8 There was a mix of UTF-8 and ISO-8859 files in the U-Boot source tree, which could cause issues with the patchwork review system. This commit converts all ISO-8859 files to UTF-8. Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net> 2011-08-04 16:45:45 +00:00			`# Daniel Engström, Omicron Ceti AB, daniel@omicron.se.`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00			`#`
Add GPL-2.0+ SPDX-License-Identifier to source files Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com> 2013-07-08 07:37:19 +00:00			`# SPDX-License-Identifier: GPL-2.0+`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00			`#`

			`include $(TOPDIR)/config.mk`

Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com> 2010-11-05 14:48:07 +00:00			`LIB = $(obj)lib$(CPU).o`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00
x86: Allow excluding reset vector code from u-boot When running from coreboot we don't want this code. This version works by ifdef-ing out all of the code that would go into those sections and all the code that refers to it. The sections are then empty, and the linker will either leave them empty for the loader to ignore or remove them entirely. Signed-off-by: Gabe Black <gabeblack@chromium.org> Signed-off-by: Simon Glass <sjg@chromium.org> 2012-11-27 21:08:06 +00:00			`START-y = start.o`
x86: Rename CONFIG_NO_X86_RESET_VECTOR to CONFIG_X86_RESET_VECTOR Invert the polarity of this option to simplify the Makefile logic. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Gabe Black <gabeblack@chromium.org> 2013-02-14 04:18:54 +00:00			`START-$(CONFIG_X86_RESET_VECTOR) += resetvec.o start16.o`
x86: Remove old broken timer implementation Tidy up some old broken and unneeded implementations. These are not used by coreboot or anything else now. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Gabe Black <gabeblack@chromium.org> Reviewed-by: Michael Spang <spang@chromium.org> Reviewed-by: Vadim Bendebury <vbendeb@chromium.org> Acked-by: Graeme Russ <graeme.russ@gmail.com> 2013-04-17 16:13:37 +00:00			`COBJS = interrupts.o cpu.o`
* Code cleanup: - remove trailing white space, trailing empty lines, C++ comments, etc. - split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c) * Patches by Kenneth Johansson, 25 Jun 2003: - major rework of command structure (work done mostly by Michal Cendrowski and Joakim Kristiansen) 2003-06-27 21:31:46 +00:00
Add support for a saving build objects in a separate directory. Modifications are based on the linux kernel approach and support two use cases: 1) Add O= to the make command line 'make O=/tmp/build all' 2) Set environement variable BUILD_DIR to point to the desired location 'export BUILD_DIR=/tmp/build' 'make' The second approach can also be used with a MAKEALL script 'export BUILD_DIR=/tmp/build' './MAKEALL' Command line 'O=' setting overrides BUILD_DIR environent variable. When none of the above methods is used the local build is performed and the object files are placed in the source directory. 2006-09-01 17:49:50 +00:00			`SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)`
			`OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS))`
x86: Rename CONFIG_NO_X86_RESET_VECTOR to CONFIG_X86_RESET_VECTOR Invert the polarity of this option to simplify the Makefile logic. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Gabe Black <gabeblack@chromium.org> 2013-02-14 04:18:54 +00:00			`START := $(addprefix $(obj),$(START-y))`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00
Add support for a saving build objects in a separate directory. Modifications are based on the linux kernel approach and support two use cases: 1) Add O= to the make command line 'make O=/tmp/build all' 2) Set environement variable BUILD_DIR to point to the desired location 'export BUILD_DIR=/tmp/build' 'make' The second approach can also be used with a MAKEALL script 'export BUILD_DIR=/tmp/build' './MAKEALL' Command line 'O=' setting overrides BUILD_DIR environent variable. When none of the above methods is used the local build is performed and the object files are placed in the source directory. 2006-09-01 17:49:50 +00:00			`all: $(obj).depend $(START) $(LIB)`

			`$(LIB): $(OBJS)`
Switch from archive libraries to partial linking Before this commit, weak symbols were not overridden by non-weak symbols found in archive libraries when linking with recent versions of binutils. As stated in the System V ABI, "the link editor does not extract archive members to resolve undefined weak symbols". This commit changes all Makefiles to use partial linking (ld -r) instead of creating library archives, which forces all symbols to participate in linking, allowing non-weak symbols to override weak symbols as intended. This approach is also used by Linux, from which the gmake function cmd_link_o_target (defined in config.mk and used in all Makefiles) is inspired. The name of each former library archive is preserved except for extensions which change from ".a" to ".o". This commit updates references accordingly where needed, in particular in some linker scripts. This commit reveals board configurations that exclude some features but include source files that depend these disabled features in the build, resulting in undefined symbols. Known such cases include: - disabling CMD_NET but not CMD_NFS; - enabling CONFIG_OF_LIBFDT but not CONFIG_QE. Signed-off-by: Sebastien Carlier <sebastien.carlier@gmail.com> 2010-11-05 14:48:07 +00:00			`$(call cmd_link_o_target, $(OBJS))`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00
			`#########################################################################`

Add support for a saving build objects in a separate directory. Modifications are based on the linux kernel approach and support two use cases: 1) Add O= to the make command line 'make O=/tmp/build all' 2) Set environement variable BUILD_DIR to point to the desired location 'export BUILD_DIR=/tmp/build' 'make' The second approach can also be used with a MAKEALL script 'export BUILD_DIR=/tmp/build' './MAKEALL' Command line 'O=' setting overrides BUILD_DIR environent variable. When none of the above methods is used the local build is performed and the object files are placed in the source directory. 2006-09-01 17:49:50 +00:00			`# defines $(obj).depend target`
			`include $(SRCTREE)/rules.mk`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00
Add support for a saving build objects in a separate directory. Modifications are based on the linux kernel approach and support two use cases: 1) Add O= to the make command line 'make O=/tmp/build all' 2) Set environement variable BUILD_DIR to point to the desired location 'export BUILD_DIR=/tmp/build' 'make' The second approach can also be used with a MAKEALL script 'export BUILD_DIR=/tmp/build' './MAKEALL' Command line 'O=' setting overrides BUILD_DIR environent variable. When none of the above methods is used the local build is performed and the object files are placed in the source directory. 2006-09-01 17:49:50 +00:00			`sinclude $(obj).depend`
* Patch by Daniel Engstr�m, 13 Nov 2002: Add support for i386 architecture and AMD SC520 board * Patch by Pierre Aubert, 12 Nov 2002: Add support for DOS filesystem and booting from DOS floppy disk 2002-11-18 00:14:45 +00:00
			`#########################################################################`